This blog continues the discussion that we began with Epic Journey: The 2008 Elections and American Politics (Rowman and Littlefield, 2009).The latest book in this series is Defying the Odds: the 2016 Elections and American Politics.

Major ideological divisions within each party and how they impacted electoral results. Republican Establishment candidates have triumphed nearly two-thirds of their disputed races while Tea Party candidates have only taken half of their contested primaries.

The top five issues for each party during the primary season and — not surprisingly — Obamacare tops both Democratic and Republican talking points.However, while over 60 percent of Democrats mentioned the health care law, nearly 80 percent of Republicans did. In fact, four of the Republican's five top issues outstripped mention of Democratic priorities, suggesting that the GOP remains unified with regard to candidate issue campaigns.

Margins of victory between Democrats, Republicans, and their nonincumbent challegers have been dipping during the past six election cycles. However, while Democrats' margin of victory reached a 10-year trough at 48 percent in 2012, Republican margins of victory have continued to shrink to 45 percent in 2014. The shrinking margins for Republican incumbents go a long way toward explaining why to many observers the Republican Establishment, in spite of their victories over the Tea Party, has adopted many of the issue positions of their Tea Party challengers.